Meet the Team

In this Section

The
Bariatric Center at Columbia St. Mary’s offers comprehensive
care before, during, and after surgery. The team is led by a
surgeon who is fellowship-trained in bariatric surgery and
laparoscopic surgery.

Other team members provide a variety of support and care
services. Specialists in nutrition, psychiatry,
gastroenterology, sleep medicine, rehabilitation, and
endocrinology will work together to help you in your recovery.
And our specially trained nursing staff understands your special
needs while you receive care in the Bariatric Center.

Surgeons

Joseph Regan, MD,
Medical Director

Dr. Regan earned his degree in
medicine from Northwestern
University in Chicago in 1996.
He completed his residency in
general surgery at the
University of Maryland Medical
System in Baltimore in 2002. In
2003, Dr. Regan completed a
fellowship in laparoscopic
digestive surgery at Mount Sinai
Medical Center in New York City.
Dr. Regan has been board
certified in surgery and
bariatric surgery since 2003.

Joseph
Regan, MD
Medical Director

Craig Siverhus, MD

Dr. Siverhus earned his degree
in medicine from the Medical
College of Wisconsin in 1988. He
completed his residency in
general surgery at the Medical
College of Wisconsin Affiliated
Hospitals in 1993. In 1994, Dr.
Siverhus completed a fellowship
in vascular surgery at St. Louis
University in Missouri.
Dr. Siverhus has been board
certified in surgery since 1995.

Craig Siverhus, MD

Susan Dugan, CBN, Nurse
Coordinator

Susan earned her degree in
nursing from Columbia University
in New York City in 1977. She
has extensive experience
coordinating and providing care
for bariatric patients, and is a
certified bariatric nurse. As a
patient advocate in the
Bariatric Center, Susan provides
support for patients in all
aspects of their care. She
coordinates pre- and
postoperative care, and
follow-up care well after
surgery.

Susan Dugan, CBN
Nurse Coordinator

Other Team Members

Many other Columbia St. Mary’s
staff members are members of the
Bariatric Center team. Nurses in
the Bariatric Center’s inpatient
unit, the nursing surgical
coordinator, the laparoscopic
coordinator, physical
therapists, psychologists,
psychiatrists,
anesthesiologists, dietitians,
surgical technicians, and others
have received special training
in meeting the special needs of
bariatric patients.